Engineering, 23.06.2021 18:40 prettygirlgwen24
Cửa mương thủy lợi có thể quay quanh trục A và tựa vào gối B như hình 2. Cửa mương sẽ bắt đầu mở khi mực nước h cách mặt đáy bao nhiêu mét?
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Cửa mương thủy lợi có thể quay quanh trục A và tựa vào gối B như hình 2. Cửa mương sẽ bắt đầu mở khi...
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